20465045 has 8 divisors (see below), whose sum is σ = 24585120. Its totient is φ = 16354000.

The previous prime is 20465041. The next prime is 20465047. The reversal of 20465045 is 54056402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20465045 - 2² = 20465041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20465041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4670 + ... + 7920.

It is an arithmetic number, because the mean of its divisors is an integer number (3073140).

Almost surely, 2^20465045 is an apocalyptic number.

It is an amenable number.

20465045 is a deficient number, since it is larger than the sum of its proper divisors (4120075).

20465045 is a wasteful number, since it uses less digits than its factorization.

20465045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20465045 is about 4523.8307881706. The cubic root of 20465045 is about 273.5295397042.

The spelling of 20465045 in words is "twenty million, four hundred sixty-five thousand, forty-five".